I have made very substantial progress with the paper I spoke about at viewtopic.php?f=6&t=242#p6221, and have posted a preview draft for my SPF friends at:
https://jayryablon.files.wordpress.com/ ... -4-spf.pdf
You may recall that at viewtopic.php?f=6&t=239#p6198 I reported the January 7 rejection by PRD, which I repeat here:
PRD wrote:The spacetime metric should not depend on the nature of the test particles moving within the spacetime. Because various types of particles have both different electric charges and different charge to mass ratios, the metric you propose in Eq. (2.1) would have to depend on the particular type of test particle whose geodesic was being determined, and could not be a property of the background spacetime and electromagnetic fields.
If instead you want to view this simply as an algorithm for obtaining the equations of motion of a test particle, then the manuscript should be directed to a journal of mathematical physics.
This rejection is thoroughly addressed in section 7 of this draft at https://jayryablon.files.wordpress.com/ ... -4-spf.pdf.
Best to all,
Jay